The Jeweller's Directory of Gemstones  (English, Paperback, Crowe Judith Ms)

A complete guide to identifying, buying, using and caring for a dazzling array of jewels.A complete reference for goldsmiths, collectors, and jewellery makers, this beautiful book is a comprehensive guide to identifying, buying, using and caring for a dazzling array of jewels and gems.The book includes practical advice on how to assess the quality, rarity, grade, durability, and cut of precious and semi-precious stones, and allows you to discover the origins of gemstones and understand the process of selecting the raw material. Learn how gems are calibrated, using the industry standard measurements of carats and points, and how they can be treated to improve both colour and clarity - a handy glossary contains all of the key terminology you need to know.Thanks to colourful illustrations and photographs, you can identify which gemstones are suitable for jewellery-making, from amethysts and diamonds to tourmaline and quartz, and learn how they can be used in different designs and settings.